Car-wheel.



PATENTED' APR. 10, 1906.

P. J. GARRISON.

. v Snow Wot 9 i 7 may,

GAR WHEEL APPLICATION FILED SEPT. 1a, 1905.

WWW.

.Three Rivers, in the county "mvrrnn s'ra'rns ATEN rion,

PERRY J. GARRISON, OF THREE RIVERS, MICHIGAN.

GAR-WHEEL.

Specification of Letters Patent.

Patented April 10, 1906.

Application filed Septembe 13, 1905. Serial No 278,266.

be of'sufficient strength to permit its use in the heaviest railwaytraflic, also to produce a wheel that is not dependent upon bolt 01rivet connections to hold its parts together, and which is thereforefree from destruction by the unscrewing of bolts or the breaking ofrivets.

In carrying out my invention I make awheel comprising but two members,each having integral rim, Web,-and hub portions and fitted togetherunder considerable pressure, with the rim portions telescoping in suchrelation as to become permanently united to form a rigid tread, with aflange-forming part on the outer rim portion folded into abutment withthe inner rim portion to further interlock the parts and support theflan e, with the web portions extending inwardly from opposite edges ofthe tread into abutment intermediate of the rim and hub, where forsecuring further stiffness they and Fig. 2 is an axial sect-ion may beunited rivets and then spread apart again to the outer ends of the hub,and with the integral hub portions projecting inwardly into abutment andproviding thebore to receive the axle upon which the wheel is pressed. Athimble or sleeve surrounds the hub thus formed, extending into abutmentwith the web members and sustaining the hub members when forced over theaxle.

My invention will be fully understood upon reference to the accompanyingdrawings, in which Figure 1 is a face View of a wheel constructed inaccordance with my invention,

of the wheel applied to astandard car-axle.

The wheel is made of two members comprising outer and inner rim portionsA a, web portions-B, extending radially inward from opposite edges ofthe rim portions and depressed into abutment intermediate of thedepressed.

rim and hub and a ain separated to meet the outer ends of the ub, andhub portions C, extending in the direction of the wheels axis inwardfrom the respective web portions and abutting in the central plane ofthe wheel to form a hub and provide bore bearing to receive the 'axle.The bore thus formed is of such dimension as to be fitted snugly overthe reduced end of the axle requiring consider-' able pressure to forceit to its seat. To sustain the hub under this pressure and to stiifenthe connection between the hub portion and the web portion, a thimble orsleeve D is introduced around the hub and in abutment with thewebportions adjacent thereto. .The internal diameter of the thimble D is,the same or less than the external diameter of the parts that areforced within it, sonthat the parts are strained within the limits oftheir elasticity as they are forced together, and there is secure andpermanent binding between them. The web portions may be tied to ether inthe annular line of their abutment though such rivets are b no meansnecessary to hold the members of the wheel together, and their breakingout would not cause serious consequences if replaced within a reasonabletime, The rim portions A a are forced together under considerablepressure, being of such relative diameters as to put the extions andtheir binding in turn upon the axle.

To further interlock the outer portions of the wheel, the part A isprovided with a flange member F, integral therewith and bent arounduntil it abuts against the shoulder between the parts a and B. This notonly greatly stiifens the flange of'the wheel, but it acts a furthersafeguard against removal of the inner member of the wheel. In practiceI refer to make the rim member A somewhat t 'cker than the inner membera, as by so doing I not only increase the life of the wheel by providing more metal to receive the wear, but I obtam a better tread for thewheel. With these relations of the dimensions of the parts a and A theinner member a is left under greater y rivets E, which will assist instifiening the structure,

' weakening angles and united in a manner to the bore or bearin 'blesurrounding the hub portions of both H eraeae strains than the outermember when the parts I arr-i forced together and the tread is in betterso dition to withstand external loads.

With a wheel constructed as abovei describe-d1 have provided asheet-metal wtheel sustaining the load placed upon the wheel entirelyeliminated, with both edges of the tread equally sustained in a radialdirection, with the wheel well braced against the thrust incident t0striking curves on the rails, with a total elimination of theeasily-broken flange in the cast wheel, and with the sustaining parts ofthe wheel substantially reduced to two in number and these of solidstructure free from prevent loosening or separation by vibration. Havingthus'de'scribed' my invention,,what I claim, and desire to secure byLetters Patent, is

' 1. In a car-wheel, the combination of two opposing members each havingintegral web and-hub portions, the hub portions forming for the aXle,and a thiminembers. p 2. A car wheel comprising two opposin members,each having integral rim, web an hub portions, the web portions abuttingand fire}? together intermediate the rim and the .u

3. As a new article of manufacture, a carwheel comprising two partstelescoping at their circumference to form the tread and abutting attheir inner edges so as to form an aide-bearing.

4. In. a car-Wheel the combination of two opposing members, each havingintegral rim, web and hub portions, the rim portions being telescopedinto binding relation, the hub portions being brought into abutment toform a hub and united by a surrounding thimble into which they areforced under pressure.

5. In a car-wheel the combination of two opposing members, each havingintegral rim, web and hub portions, the rim portions being telescopedinto binding relation, the hub por- -tions being brought into abutmentto form a hub and united by a surrounding thimble into which they areforced under pressure; the web portions being also brought into abutmentand tied together at points in an annulus intermediate the rim and thehub.

6. A metallic wheel comprising two members each. constructed withintegral rim, web and hub portions, the rim portions being telescopedinto permanent binding relation to form a Wheel-tread, the Web portionsextending radially inward from opposite edges of the tread thus formed,depressed into abutment and tied-together intermediate of the rim andhub, and then spaced apart to meet the ends of the hub, and the hubportions extending inwardly from the Web portions and brought intoabutment, and tied together by surrounding thimble into which they areforced.

The foregoing specification si ned at Washington, District of Columbia,this 7th day of September, 19-05.

PERRY J. GARRISON.

In presence of HERVEY S. KNIGHT, EDWIN S. CLARKSON.

